Preparing a short chambered barrel.

[WKWRIGHT]

I have a short chambered barrel (Pac Nor) I have accidentally chambered too deep (probably 0.005 ish) what's the best fix without re-cutting threads etc.?

 

[Jud96]

There's no other way to shorten the headspace other than setting it back a thread and recutting the chamber depth or by take a cut on the barrel's shoulder.

 

[bigngreen]

.005 isn't a deal breaker for a gun for your own use, the easiest thing to do is jamb a bullet and fire form your brass and set your die accordingly

 

[John Klingenberg]

Re-cutting the shoulder will usually require re-cutting the breech face too. You're in a pickle WK, haul it down to the gun plumber.

 

[bigngreen]

You need to do more precise measuring, what action is this on? .005 is not hard to deal with depending on the action and the bolt nose clearance.

 

[Mram10us]

Depending on the action, you could true the receiver face .003" and add in your .002" crush. If not, you can do what jud96 said. Definitely more to do if youre Timing flutes

 

[MNbogboy]

Depending in the action as shortgrass & others have said. Prefit Rems sometimes have a generous nose clearance. If that is the case then an alternate method would be to "surface grind" the lug the .005 (not much).
Flute timing, curvature clocking, open sights etc. Will require the 1 thread setback as others mentioned.

 

[tobnpr]

Take a piece of Plastigage or soft solder, stick it onto the back of the go-gauge (dab of grease), close the bolt.
Remove and then mike it. That'll tell you exactly what your headspace clearance is.